9/10
The Spinner itself sucks badly but the music is just gorgeous.
Unfortunately except for the theme of the map (Undertale-Pixel-Textures) and the music there isn't a whole lot of things I would connect with Undertale tbh.
Idk I would rather remove one of the Cocainum maps or have only one of them for Halloween (in this case the Spooky-Version) or Christmas (in this case the XMas-Version) in rotation at a time, then discuss about this map. But that's for another day.
Have a good night.
Blossom :3
EDIT1: Just the flower at the beginning after the first trap around the corner is just dumb. You cannot get past that without soneone dying and using exploits... well y'know what would happen.